JP2014222811A - Information apparatus, control method therefor, and program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To suppress the increase of power consumption without deteriorating convenience.SOLUTION: An information apparatus includes: a first display unit disposed in a first housing; a first illuminance sensor disposed close to the first display unit correspondingly to the first display unit and measuring circumferential illuminance; a second display unit disposed in a second housing that is openably connected to the first housing; a second illuminance sensor disposed close to the second display unit correspondingly to the second display unit and measuring circumferential illuminance; and a control unit for allowing the display unit corresponding to the illuminance sensor with smaller measurement illuminance to stop displaying when a difference between the first illuminance measured by the first illuminance sensor and the second illuminance measured by the second illuminance sensor becomes equal to or more than a predetermined threshold during the displaying of the first display unit and the second display unit.

Description

  The present invention relates to an information device having a display unit, a control method therefor, and a program.

  An information device such as a mobile phone or a smartphone includes a first casing and a second casing that is movably connected to the first casing, and a display unit is provided in each casing. There is something. According to such an information device, the user can change the form of the information device according to the usage situation and the like, and convenience is improved.

  In the information device having the two display units as described above, the power consumption increases if images are continuously displayed on each of the two display units while the information device is being used. A technique for suppressing an increase in power consumption by controlling the display on the display unit according to the usage pattern is being studied.

  For example, in Patent Document 1 (Japanese Patent Application Laid-Open No. 2011-155391), a first housing provided with a first display portion, and a second display portion connected to the first housing are provided. In the first state where the optical sensor that measures the ambient brightness is mounted on the information device including the second casing and the brightness measured by the optical sensor is less than the threshold value, the first video is displayed as the first video. In the second state where the second image is displayed on the second display unit and the brightness measured by the optical sensor is equal to or greater than the threshold value, the first and second images are displayed on the first display unit. The display unit displays a higher brightness than in the first state, and stops displaying the second display unit.

  According to the technique disclosed in Patent Document 1, since a video is displayed with high brightness in a bright place, it is possible to suppress a reduction in the visibility of the displayed video and to stop the display of the second display unit. Therefore, an increase in power consumption can be suppressed.

  Further, in Patent Document 2 (Japanese Patent Laid-Open No. 2010-140410), a first housing provided with a first display unit, and a first display unit that is openably and closably connected to the second display unit. A sensor that measures angular velocity, acceleration, and the like is provided in an information device that includes a second housing provided with the first display unit or the second display unit in the direction of gravity (downward) based on the sensor measurement result. A technique for determining whether or not to face and stopping the display of the display unit that has been determined to face downward is disclosed.

  When the display unit faces downward, it is conceivable that the information device is installed such that the display unit is in contact with an installation surface such as a desk. In such a state, since the user does not normally see the display unit facing downward, there is no problem even if the display on the display unit is stopped. Then, like the technique currently disclosed by patent document 2, the increase in power consumption can be suppressed by stopping the display of the display part which faces downward.

  Patent Document 3 (Japanese Unexamined Patent Application Publication No. 2009-222951) includes a first housing provided with a first display portion, a first housing that can be opened and closed, and a second display portion. The first display unit and the second display unit are opposed to each other in a state in which the first housing and the second housing are closed. In the information device in which the first display unit and the second display unit face in substantially opposite directions in a state where the housing and the second housing are folded, the first housing and the second housing are A technique is disclosed that, when folded, stops display of any one of the first display unit and the second display unit set in advance by the user.

  In the state in which the first housing and the second housing are folded, the first display unit and the second display unit face in substantially opposite directions, so that the user can use the first display unit and the second display unit. It is considered that only one of the display portions of the screen is seen. Therefore, as in the technique disclosed in Patent Document 3, when the first casing and the second casing are folded, one of the first display section and the second display section is stopped. By doing so, an increase in power consumption can be suppressed.

JP 2011-155391 A JP 2010-140410 A JP 2009-222951 A

  In the technique disclosed in Patent Document 1, only display control of the display unit according to ambient brightness is performed, and display control of the display unit according to the usage form of the information device is not performed. . Therefore, depending on how the information device is used, the specific display unit remains displayed even though the user is not likely to see the specific display unit, and the increase in power consumption cannot be sufficiently suppressed. There is.

  In the technique disclosed in Patent Document 2, since it is determined whether or not the display unit faces downward based on measurement results such as angular velocity and acceleration, when the installation surface is inclined. The display unit in contact with the installation surface does not face downward, and the display unit remains displayed, so that an increase in power consumption cannot be sufficiently suppressed.

  Further, in the technique disclosed in Patent Document 3, the display unit set to stop the display when the user turns the first housing and the second housing face each other. If the first casing and the second casing are folded back as described above, the display on the display unit facing the user is stopped, which is inconvenient.

  An object of the present invention is to provide an information device that can suppress an increase in power consumption without impairing convenience, a control method thereof, and a program.

In order to achieve the above object, the information device of the present invention provides:
A first display unit provided in the first housing;
A first illuminance sensor corresponding to the first display unit and provided in the vicinity of the first display unit and measuring ambient illuminance;
A second display portion provided in a second housing that is openably and closably connected to the first housing;
A second illuminance sensor corresponding to the second display unit, provided in the vicinity of the second display unit and measuring ambient illuminance;
The difference between the first illuminance measured by the first illuminance sensor and the second illuminance measured by the second illuminance sensor during display of the first display unit and the second display unit. And a control unit that stops the display of the display unit corresponding to the illuminance sensor having a small measured illuminance.

In order to achieve the above object, a method for controlling an information device according to the present invention includes:
A control method for information equipment,
Corresponding to the first display unit provided in the first first housing of the information device, the ambient illuminance is measured by a first illuminance sensor provided in the vicinity of the first display unit,
The second illuminance sensor provided in the vicinity of the second display unit corresponding to the second display unit provided in the second case connected to the first case so as to be openable / closable is surrounded by the second illuminance sensor. Measure the illuminance of
The difference between the first illuminance measured by the first illuminance sensor and the second illuminance measured by the second illuminance sensor during display of the first display unit and the second display unit. Is equal to or greater than a predetermined threshold value, the display on the display unit corresponding to the illuminance sensor having a small measured illuminance is stopped.

In order to achieve the above object, the program of the present invention
To the computer in the information device,
Processing for measuring ambient illuminance by a first illuminance sensor corresponding to the first display unit provided in the first first housing of the information device and provided in the vicinity of the first display unit When,
The second illuminance sensor provided in the vicinity of the second display unit corresponding to the second display unit provided in the second case connected to the first case so as to be openable and closable is surrounded by the second illuminance sensor. The process of measuring the illuminance of
The difference between the first illuminance measured by the first illuminance sensor and the second illuminance measured by the second illuminance sensor during display of the first display unit and the second display unit. When the value becomes equal to or greater than a predetermined threshold value, a process of stopping the display on the display unit corresponding to the illuminance sensor having a small measured illuminance is executed.

  According to the present invention, it is possible to suppress an increase in power consumption without impairing convenience.

It is a block diagram which shows the structure of the information equipment of the 1st Embodiment of this invention. It is a figure which shows an example of the external appearance of the information equipment shown in FIG. It is a figure which shows an example of the form of the information equipment shown in FIG. It is a figure which shows an example of the form of the information equipment shown in FIG. It is a figure which shows an example of the form of the information equipment shown in FIG. It is a flowchart which shows operation | movement of the information equipment shown in FIG. It is a figure which shows an example of the installation state of the information equipment shown in FIG. It is sectional drawing of the information equipment shown to FIG. 5A. It is a figure which shows an example of the installation state of the information equipment shown in FIG. It is sectional drawing of the information equipment shown to FIG. 6A. It is a block diagram which shows the structure of the information equipment of the 2nd Embodiment of this invention. It is a flowchart which shows operation | movement of the information equipment shown in FIG.

  EMBODIMENT OF THE INVENTION Below, the form for implementing this invention is demonstrated with reference to drawings.

(First embodiment)
FIG. 1 is a block diagram showing the configuration of the information device 100 according to the first embodiment of this invention. FIG. 2 is a diagram illustrating an example of the appearance of the information device 100.

  Specific examples of the information device according to the present invention include a mobile phone, a smartphone, a tablet-type or notebook-type personal computer, a PDA (Personal Data Assistants), a portable game machine, and an electronic book terminal.

  The information device 100 includes display units 111 and 121, illuminance sensors 112 and 122, and a control unit 130. The display unit 111 is an example of a first display unit, and the display unit 121 is a second display unit. The illuminance sensor 112 is an example of a first illuminance sensor, and the illuminance sensor 122 is an example of a second illuminance sensor.

  As shown in FIG. 2, the display unit 111 is provided on one surface 110 a of the first housing 110 and displays an image under the control of the control unit 130.

  As shown in FIG. 2, the display unit 121 is provided on one surface 120 a of the second housing 120 connected to the first housing 110, and displays an image according to the control of the control unit 130. .

  Note that the first casing 110 and the second casing 120 are connected so as to be openable and closable. Hereinafter, an angle formed by the first casing 110 and the second casing 120 is referred to as an opening / closing angle.

  The first casing 110 and the second casing 120 are connected so as to be openable and closable within an opening / closing angle range of approximately 0 degrees to approximately 360 degrees. Accordingly, the information device 100 has a configuration in which the opening / closing angle is approximately 180 degrees as shown in FIG. 2, a configuration in which the opening / closing angle is larger than approximately 180 degrees as shown in FIGS. 3A and 3B, and a configuration shown in FIG. 3C. Thus, the present invention can be used in various forms such as a form in which the opening / closing angle is approximately 360 degrees and a form in which the opening / closing angle is 180 degrees or less.

  The display unit 111 and the display unit 121 face substantially the same direction when the opening / closing angle is approximately 180 degrees (FIG. 2), and face substantially opposite directions when the opening / closing angle is approximately 360 degrees (FIG. 3C).

  The illuminance sensor 112 is provided corresponding to the display unit 111. As shown in FIG. 2, the illuminance sensor 112 is provided in the vicinity of the display unit 111 in the same direction as the display unit 111, measures ambient illuminance (external light amount), and outputs the measurement result to the control unit 130. To do.

  The illuminance sensor 122 is provided corresponding to the display unit 121. As shown in FIG. 2, the illuminance sensor 122 is provided in the vicinity of the display unit 121 in the same direction as the display unit 121, measures ambient illuminance (external light amount), and outputs the measurement result to the control unit 130. To do.

  The control unit 130 displays various images on the display unit 111 and the display unit 121. Further, the control unit 130 controls the display of the display units 111 and 121 according to the measurement results of the illuminance sensors 112 and 122.

  Next, the operation of the information device 100 of this embodiment will be described.

  FIG. 4 is a flowchart showing the operation of the information device 100.

  When the control unit 130 displays the image on the display unit 111 and the display unit 121, the control unit 130 acquires the measurement result of the external light amount from the illuminance sensor 112 (step S101). Hereinafter, the external light amount measured by the illuminance sensor 112 is referred to as an external light amount a.

  Next, the control unit 130 acquires the measurement result of the external light amount from the illuminance sensor 122 (step S102). Hereinafter, the external light amount measured by the illuminance sensor 122 is referred to as external light amount b.

  Next, the control unit 130 determines whether or not the absolute value of the difference between the external light amount a and the external light amount b is less than a predetermined threshold (hereinafter referred to as an external light amount difference threshold) (step S103).

  When it is determined that the absolute value of the difference between the external light amount a and the external light amount b is less than the external light amount difference threshold (step S103: Yes), the control unit 130 continues to display the display unit 111 and the display unit 121. (Step S104).

  If it is determined that the absolute value of the difference between the external light amount a and the external light amount b is equal to or greater than the external light amount difference threshold (step S103: No), the control unit 130 determines whether the external light amount a is greater than the external light amount b. It is determined whether or not (step S105).

  When it is determined that the external light amount a is larger than the external light amount b (step S105: Yes), the control unit 130 stops the display of the display unit 121 corresponding to the illuminance sensor 122 with the small external light amount measured (step S105). S106).

  On the other hand, when it is determined that the external light amount a is equal to or less than the external light amount b (step S105: No), the control unit 130 stops the display of the display unit 111 corresponding to the illuminance sensor 112 having the small measured external light amount. (Step S107).

  As described above, when the absolute value of the difference between the external light amount a and the external light amount b is less than the external light amount difference threshold, the control unit 130 continues the display on the display unit 111 and the display unit 121. In addition, when the absolute value of the difference between the external light amount a and the external light amount b is equal to or greater than the external light amount difference threshold, the control unit 130 stops the display on the display unit corresponding to the illuminance sensor with the small measured external light amount. .

  Note that the control unit 130 repeats the above-described processing from step S101 to step S107 at predetermined time intervals while displaying video on the display unit 111 and the display unit 121.

  Next, the operation of the information device 100 in a specific form will be described.

  As shown in FIGS. 5A and 5B, the information device 100 is installed such that the opening / closing angle is about 300 degrees, and one side of the first housing 110 and one side of the second housing 120 are in contact with the installation surface. In this state, the user may see both the display unit 111 and the display unit 121. 5B is a cross-sectional view of FIG. 5A.

  Here, in the installation state of the information device 100 shown in FIGS. 5A and 5B, the illuminance sensor 112 and the illuminance sensor 122 are not covered with an installation surface or the like. Therefore, the difference between the external light amount a and the external light amount b is small.

  On the other hand, as shown in FIGS. 6A and 6B, when the information device 100 is installed such that the opening / closing angle is about 300 degrees and the display unit 121 is in contact with the installation surface, the user sees only the display unit 111. Therefore, it is considered that the display unit 121 is not seen. FIG. 6B is a cross-sectional view of FIG. 6A.

  Here, the illuminance sensor 112 is not covered with an installation surface or the like, but the illuminance sensor 122 is arranged in the same direction as the display unit 121 and thus is covered with the installation surface. Therefore, the external light quantity b measured by the illuminance sensor 122 is small, and the difference between the external light quantity a and the external light quantity b is the difference between the external light quantity a and the external light quantity b in the installation state of the information device 100 shown in FIGS. It becomes larger than the difference.

  As the external light amount difference threshold, in the installation state of the information device 100 shown in FIGS. 5A and 5B, the absolute value of the difference between the external light amount a and the external light amount b is less than the external light amount difference threshold, and the information device shown in FIGS. In the installation state of 100, a value is set such that the absolute value of the difference between the external light amount a and the external light amount b is less than the external light amount difference threshold.

  By doing so, in the installed state of the information device 100 shown in FIGS. 5A and 5B, the display of both the display unit 111 and the display unit 121 is continued. 6A and 6B, the display of the display unit 111 is continued and the display of the display unit 121 is stopped. For this reason, the display of the display unit that the user may see is not stopped, and the display of the display unit that the user thinks that the user does not see the display can be stopped. Therefore, the power consumption can be reduced without impairing the convenience. Can be planned.

  As described above, the information device 100 according to the present embodiment is connected to the display unit 111 provided in the first housing 100, the illuminance sensor 112 corresponding to the display unit 111, and the first housing 110 so as to be opened and closed. The difference between the illuminance measured by the illuminance sensor 112 and the illuminance measured by the illuminance sensor 122 is provided with the display unit 121 provided in the second casing 120 and the illuminance sensor 122 corresponding to the display unit 121. If it is equal to or greater than the predetermined threshold value, the display on the display unit corresponding to the illuminance sensor having a small measured illuminance is stopped.

  Therefore, the display of the display unit that the user may see is not stopped, and the display of the display unit that the user may not see can be stopped, so that the increase in power consumption is suppressed without impairing convenience. can do.

(Second Embodiment)
FIG. 7 is a block diagram illustrating a configuration of the information device 200 according to the second embodiment of this invention. In FIG. 7, the same components as those in FIG.

  Similar to the information device 100 of the first embodiment, the information device 200 of the present embodiment includes a first housing 110 and a second housing 120 connected to the first housing 110 so as to be openable and closable. have.

  7 includes display units 111 and 121, illuminance sensors 112 and 122, backlight drivers 213 and 223, a ROM (Read Only Memory) 230, a RAM (Random Access Memory) 240, and a control. Part 250.

  The display unit 111 is provided in the first housing 110 and includes a backlight 211 and an LCD (Liquid Crystal Display) 212.

  The backlight 211 is turned on under the control of the backlight driver 213 and emits light that illuminates the LCD 212.

  The LCD 212 modulates and outputs the light emitted from the backlight 211 according to the control of the control unit 250.

  The display unit 121 is provided in the second housing 120 and includes a backlight 221 and an LCD 222.

  The backlight 221 is turned on according to the control of the backlight driver 223 and emits light that illuminates the LCD 222.

  The LCD 222 modulates and outputs the light emitted from the backlight 221 according to the control of the control unit 250.

  The ROM 230 stores basic programs and parameters necessary for the control unit 250 to execute various processes.

  The RAM 240 stores data temporarily necessary for the control unit 250 to execute various processes.

  The control unit 250 causes the backlight driver 213 to turn on the backlight 211 and causes the LCD 212 to modulate the light emitted from the backlight 211 in accordance with the data of the display target video, thereby displaying the video. Further, the control unit 250 causes the backlight driver 223 to turn on the backlight 221 and causes the LCD 222 to modulate the light emitted from the backlight 221 in accordance with the data of the display target video, thereby displaying the video.

  In addition, the control unit 250 controls the backlight driver 213 to turn on the backlight 211 and the backlight driver 223 to control the lighting of the backlight 221 according to the measurement results of the illuminance sensors 112 and 122, and the LCD 212, The driving of 221 is controlled.

  Next, the operation of the information device 200 of this embodiment will be described.

  FIG. 8 is a flowchart showing the operation of the information device 200.

  When displaying a video on the display unit 111 and the display unit 121, the control unit 250 drives the LCD 212 and the LCD 222 according to the video data to be displayed. In addition, the control unit 250 causes the backlight driver 213 to turn on the backlight 211 and causes the backlight driver 223 to turn on the backlight 221.

  Next, the control unit 250 acquires the external light amount a from the illuminance sensor 112 (step S201), and stores the acquired external light amount a in the RAM 240 (step S202).

  Next, the control unit 250 corrects the luminance of the backlight 211 based on the external light amount a stored in the RAM 240. Specifically, the control unit 250 determines the luminance of the backlight 211 that makes the display on the display unit 111 easy to see for the user in the environment of the brightness indicated by the external light amount a, and determines the luminance of the backlight 211. The corrected value is corrected (step S203). Thus, by determining the luminance of the backlight 211 based on the measurement result of the illuminance sensor 112, it is possible to prevent the display visibility of the display unit 111 from being lowered regardless of the surrounding brightness.

  Next, the control unit 250 acquires the external light amount b from the illuminance sensor 122 (step S204), and stores the acquired external light amount b in the RAM 240 (step S205).

  Note that, as described above, the control unit 250 repeats the process illustrated in FIG. 8 at a predetermined cycle while displaying video on the display unit 111 and the display unit 121. Here, when the external light quantity a and the external light quantity b are already stored in the RAM 240, the control unit 250 overwrites the newly read external light quantity a and external light quantity b.

  Next, the control unit 250 corrects the luminance of the backlight 221 based on the external light amount b stored in the RAM 240. Specifically, the control unit 250 determines the luminance of the backlight 221 so that the display on the display unit 121 is easy to see for the user in the environment of the brightness indicated by the external light amount b, and determines the luminance of the backlight 221. The corrected value is corrected (step S206). Thus, by determining the luminance of the backlight 221 based on the measurement result of the illuminance sensor 122, it is possible to prevent the display visibility of the display unit 121 from being lowered regardless of the surrounding brightness.

  Next, the control unit 250 reads the external light amount a stored in the RAM 240 (step S207).

  Next, the controller 250 determines whether or not the external light amount a is larger than a predetermined minimum external light amount threshold value (step S208). Here, as the minimum extraneous light amount threshold, in a state where the information device 200 is installed so that the display unit is in contact with the installation surface, a comparison is made that is slightly higher than the external light amount measured by the illuminance sensor corresponding to the display unit. A low value is set. Note that the minimum extraneous light amount threshold value is stored in the ROM 230.

  When it is determined that the external light amount a is larger than the minimum external light amount threshold (step S208: Yes), the control unit 250 reads the external light amount b stored in the RAM 240 (step S209).

  Next, the control unit 250 determines whether or not the external light amount b is larger than the minimum external light amount threshold (step S210).

  When it is determined that the external light amount b is larger than the minimum external light amount threshold (step S210: Yes), the control unit 250 continues to display the display units 111 and 121 (step S211).

  As described above, the minimum extraneous light amount threshold is slightly higher than the external light amount measured by the illuminance sensor corresponding to the display unit when the information device 200 is installed so that the display unit is in contact with the installation surface. Value is set. Therefore, when both the external light amount a and the external light amount b are larger than the minimum external light amount threshold, for example, as shown in FIGS. 5A and 5B, the information device 200 prevents the display units 111 and 121 from touching the installation surface. It is considered that it is installed. In such a state, since there is a possibility that the user sees both the display units 111 and 121, the control unit 250 continues to display the display units 111 and 121.

  When it is determined that the external light amount a is equal to or smaller than the minimum external light amount threshold (step S208: No), the control unit 250 reads the external light amount b stored in the RAM 240 (step S212).

  After reading the external light amount b in step S212 or when it is determined in step S210 that the external light amount b is equal to or less than the minimum external light amount threshold (step S210: No), the control unit 250 determines that the external light amount a is It is determined whether or not the absolute value of the difference from the external light quantity b is less than the external light quantity difference threshold (step S213). The external light amount difference threshold is stored in the ROM 230.

  When it is determined that the absolute value of the difference between the external light amount a and the external light amount b is less than the external light amount difference threshold (step S213: Yes), the control unit 250 proceeds to the process of step S211.

  When it is determined that the absolute value of the difference between the external light amount a and the external light amount b is equal to or greater than the external light amount difference threshold (step S213: Yes), the control unit 250 determines whether the external light amount a is greater than the external light amount b. It is determined whether or not (step S214).

  When it is determined that the external light amount a is larger than the external light amount b (step S214: Yes), the control unit 250 stops the display of the display unit 121 corresponding to the illuminance sensor 122 with the small external light amount measured (step S214). S215). Specifically, the control unit 250 stops driving the LCD 222 and causes the backlight driver 223 to stop lighting the backlight 221.

  When it is determined that the external light amount a is equal to or smaller than the external light amount b (step S214: No), the control unit 250 stops the display of the display unit 111 corresponding to the illuminance sensor 112 having the small external light amount measured (step S214). S216). Specifically, the control unit 250 stops driving the LCD 212 and causes the backlight driver 213 to stop lighting the backlight 211.

  In a dark environment, as shown in FIGS. 5A and 5B, both the external light amount a and the external light amount b are present even when the information device 200 is installed such that the display units 111 and 121 do not contact the installation surface. There is a possibility that it is below the minimum outside light amount threshold. In such a case, when it is determined based on the external light quantity measured by the illuminance sensor whether the display unit 111 or the display unit 121 is in contact with the installation surface, both the display units 111 and 121 are in contact with the installation surface. It is determined that there is a risk of malfunction. However, when the external light amount a and the external light amount b are both less than the minimum external light amount threshold and the difference between the external light amount a and the external light amount b is equal to or greater than the external light amount difference threshold, as in the present embodiment. By determining that the display unit corresponding to the illuminance sensor having a small external light amount is in contact with the installation surface, the possibility of the above-described malfunction can be reduced.

  As described above, the information device 200 according to the present embodiment is connected to the display unit 111 provided in the first housing 100, the illuminance sensor 112 corresponding to the display unit 111, and the first housing 110 so as to be opened and closed. The display unit 121 provided in the second housing 120 and the illuminance sensor 122 corresponding to the display unit 121 have a difference between the illuminance measured by the illuminance sensor 112 and the illuminance measured by the illuminance sensor 122. If it is equal to or greater than the predetermined threshold value, the display on the display unit corresponding to the illuminance sensor having a small measured illuminance is stopped.

  Therefore, the display on the display unit that the user may see is not stopped, and the display on the display unit that the user may not see can be stopped. Therefore, the power consumption can be reduced without impairing the convenience. be able to.

  Note that an illuminance sensor is often provided in an information device in order to perform backlight luminance correction processing as described above. In the present invention, the illuminance sensor used for the backlight brightness correction process is also used for detecting the installation state of the information equipment. Therefore, it is not necessary to provide a new sensor for detecting the installation state of the information device, and an increase in the number of parts can be suppressed.

  The method performed in the information device of the present invention may be applied to a program for causing a computer to execute. In addition, the program can be stored in a storage medium and can be provided to the outside via a network.

100, 200 Information device 111, 121 Display unit 112, 122 Illuminance sensor 130, 250 Control unit 211, 221 Backlight 212, 222 LCD
213, 223 Backlight driver 230 ROM
240 RAM

Claims (5)

A first display unit provided in the first housing;
A first illuminance sensor corresponding to the first display unit and provided in the vicinity of the first display unit and measuring ambient illuminance;
A second display portion provided in a second housing that is openably and closably connected to the first housing;
A second illuminance sensor corresponding to the second display unit, provided in the vicinity of the second display unit and measuring ambient illuminance;
The difference between the first illuminance measured by the first illuminance sensor and the second illuminance measured by the second illuminance sensor during display of the first display unit and the second display unit. And a control unit that stops the display of the display unit corresponding to the illuminance sensor having a small measured illuminance when the value becomes equal to or greater than a predetermined threshold value. The information device according to claim 1,
In the control unit, at least one of the first illuminance and the second illuminance is not less than a predetermined value, and a difference between the first illuminance and the second illuminance is not less than the predetermined threshold value. Then, the display device corresponding to the illuminance sensor having a small measured illuminance is stopped. A control method for information equipment,
Corresponding to the first display unit provided in the first first housing of the information device, the ambient illuminance is measured by a first illuminance sensor provided in the vicinity of the first display unit,
The second illuminance sensor provided in the vicinity of the second display unit corresponding to the second display unit provided in the second case connected to the first case so as to be openable and closable is surrounded by the second illuminance sensor. Measure the illuminance of
The difference between the first illuminance measured by the first illuminance sensor and the second illuminance measured by the second illuminance sensor during display of the first display unit and the second display unit. A control method characterized by stopping display of a display unit corresponding to an illuminance sensor having a small measured illuminance when is equal to or greater than a predetermined threshold. The control method according to claim 3, wherein
Measured when at least one of the first illuminance and the second illuminance is greater than or equal to a predetermined value and the difference between the first illuminance and the second illuminance is greater than or equal to the predetermined threshold. A control method characterized by stopping display on a display unit corresponding to an illuminance sensor with low illuminance. To the computer in the information device,
Processing for measuring ambient illuminance by a first illuminance sensor corresponding to the first display unit provided in the first first housing of the information device and provided in the vicinity of the first display unit When,
The second illuminance sensor provided in the vicinity of the second display unit corresponding to the second display unit provided in the second case connected to the first case so as to be openable / closable is surrounded by the second illuminance sensor. The process of measuring the illuminance of
The difference between the first illuminance measured by the first illuminance sensor and the second illuminance measured by the second illuminance sensor during display of the first display unit and the second display unit. A program for executing a process of stopping display of a display unit corresponding to an illuminance sensor having a small measured illuminance when the value becomes equal to or greater than a predetermined threshold.

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